CVE-2026-119408 (CVSS 8.8)

Description

n8n before 2.42.6, 2.43.x before 2.43.3, and 3.x before 3.0.1 contains a remote code execution vulnerability via deprecated Function, Function Item, and LangChain Code nodes running outside task runner isolation. Authenticated users who can create, modify, or import workflows naming these hidden node types can execute JavaScript in the n8n main process.

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CVSS v3.1 Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0063

Probability of exploitation

0.51%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-653 CWE-653

References

Other References

https://abraxaslabs.tech/research/n8n-function-vm2 https://github.com/n8n-io/n8n https://github.com/n8n-io/n8n/blob/[email protected]/packages/nodes-base/nodes/Function/Function.node.ts#L167 https://github.com/n8n-io/n8n/commit/ea8417e29ad6f8b981d9a04b17283d5d77f2b5bb https://github.com/n8n-io/n8n/releases/tag/[email protected] https://github.com/n8n-io/n8n/releases/tag/[email protected] https://github.com/n8n-io/n8n/releases/tag/[email protected] https://github.com/n8n-io/n8n/security/advisories/GHSA-9p7v-45m2-wxgj https://www.vulncheck.com/advisories/n8n-before-2.42.6-2.43.3-and-3.0.1-code-execution-outside-task-runner-isolation-via-deprecated-function-nodes

Frequently Asked Questions

What is CVE-2026-119408? +

n8n before 2.42.6, 2.43.x before 2.43.3, and 3.x before 3.0.1 contains a remote code execution vulnerability via deprecated Function, Function Item, and LangChain Code nodes running outside task runner isolation. Authenticated users who can create, modify, or import workflows naming these hidden node types can execute JavaScript in the n8n main process. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-119408? +

CVE-2026-119408 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0063, placing it in the 1th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-119408? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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